It is comprised of a high resolution Mixed-signal Front-End and of a dense Power and energy Computation Engine to achieve at the system-level a class accuracy as high as 0.1% (class accuracy of the product is 0.05%) over a range up to 1/10,000.

Technical article: Complete power metering silicon IP solution: How to specify and integrate successfully a measurement analog front-end including its power computation engine in an energy metering IC

Key Benefits

  • Embedded Computation Engine for utility biling applications
  • Low noise Programmable Gain Amplifier (PGA), to reach the best class accuracy with each type of sensors
  • Embedded power management for the best resilience to power supply noise


  • Energy Metering

Key Performances

  • Exceeds IEC 62053-22 Classes 0.2s
  • Active energy accuracy: < 0.05% error over 1/5000 range
  • Reactive energy accuracy: < 0.1% error over 1/3000 range
  • Supports CT & Shunt resistors
  • Chopper stabilized & low noise programmable amplifier
  • Low noise and low drift voltage reference: 25 ppm/°C, Chopper stabilized
  • 3 independent 24b ∑Δ ADC
  • Charge pump to improve linearity for large negative input signals
  • Flexible supply voltage: 5V ± 10% with Low noise LDO, 3.3V ± 10% with LDO bypassed
  • Offset/gain/phase calibration
  • Silicon proven: Measurement report available
  • Junction Temperature: -40 to 100°C
  • Pin to pin compatibility